Micromod MOD: 1731N ICN Mini-Link Users Guide - Manual (Page 15)

IB-23C003
INSTALLATION
2.4 SWITCH AND JUMPER SETTINGS
This section contains a brief description of the Mini Link switches and jumpers with an
application table for each. A quick reference table of all switches, jumpers, and their
functions is in Appendix A.
2.4.1 Serial Ports
The Mini Link has two serial ports. Each serial port can be configured with an
independent baud rate and CTS signal for access by two controlling consoles. The first
serial port is dedicated to the PC/AT I/O Channel and requires base address and interrupt
configuration. The second (optional) serial port can be accessed via a nine pin D-type
connector at the rear of the PC/AT by any RS-232 device.
Base Address of PC/AT Serial Port
The serial port dedicated to the PC/AT I/O Channel is factory configured to occupy the
standard I/O address of COM2 (02F8
h
) with an interrupt level of IRQ3. The base address
of the PC/AT Serial Port is switch selectable using DIP switch SW2. Table 2-2 identifies
the possible DIP switch configurations for SW2.
Table 2-2. DIP Switch SW2, PC/AT Serial Port Base Address
* Set SW2-8 to the CLOSED position to disable the Mini Link entirely without removing the board from the personal
computer.
Switch
Assign-
ment
Switch Setting for Port / Interrupt / Address
COM1,
IRQ4, 3F8
h
COM2,
IRQ3, 2F8
h
COM3,
IRQ4, 3E8
h
COM4,
IRQ3, 2E8
h
SW2-1 A3 OPEN OPEN OPEN OPEN
SW2-2 A4 OPEN OPEN CLOSED CLOSED
SW2-3 A5 OPEN OPEN OPEN OPEN
SW2-4 A6 OPEN OPEN OPEN OPEN
SW2-5 A7 OPEN OPEN OPEN OPEN
SW2-6 A8 OPEN CLOSED OPEN CLOSED
SW2-7 A9 OPEN OPEN OPEN OPEN
SW2-8 CommPort
Enable*
OPEN OPEN OPEN OPEN
2-3